On the Finite Element Approximation of Fourth-Order Singularly Perturbed Eigenvalue Problems
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Contributors
Abstract
We consider fourth-order singularly perturbed eigenvalue problems in one-dimension and the approximation of their solution by the h version of the Finite Element Method (FEM). In particular, we use a {C1-conforming FEM with piecewise polynomials of degree p ≥ 3 defined on an exponentially graded mesh. We show that the method converges uniformly, with respect to the singular perturbation parameter, at the optimal rate when the error in the eigenvalues is measured in absolute value and the error in the eigenvectors is measured in the energy norm. We also illustrate our theoretical findings through numerical computations for the case p = 3 {p=3}.
Details
Original language | English |
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Pages (from-to) | 465-476 |
Number of pages | 12 |
Journal | Computational methods in applied mathematics |
Volume | 22 |
Issue number | 2 |
Publication status | Published - 1 Apr 2022 |
Peer-reviewed | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- Boundary Layers, Exponentially Graded Mesh, Finite Element Method, Fourth Order Singularly Perturbed Eigenvalue Problem, Uniform Convergence